New quantum gravity theory links entropy, dark energy, and life
2 hours ago
- A new theory called Gravity from Entropy (GfE) proposes that cosmic expansion can increase total entropy while decreasing entropy per unit volume, allowing local complexity to emerge.
- The theory addresses the puzzle of how galaxies, stars, planets, and life form despite the second law of thermodynamics, which requires total entropy to increase.
- GfE builds on the connection between gravity and thermodynamics, extending ideas from black hole entropy and Hawking radiation to a quantum gravity framework.
- The model reproduces general relativity at low energies but introduces a dynamically changing dark energy term at higher energies, potentially testable through observations.
- The study suggests that spacetime and gravity have an informational and thermodynamic foundation, with the quantum geometric relative entropy acting as local entropy per volume.